Module: Byebug::MiscUtils

Included in:
Runner
Defined in:
lib/byebug/helper.rb

Overview

Miscelaneous Utilities

Instance Method Summary collapse

Instance Method Details

#which(cmd) ⇒ Object

Cross-platform way of finding an executable in the $PATH. Borrowed from: stackoverflow.com/questions/2108727



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# File 'lib/byebug/helper.rb', line 10

def which(cmd)
  return File.expand_path(cmd) if File.exist?(cmd)

  exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
  ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
    exts.each do |ext|
      exe = File.join(path, "#{cmd}#{ext}")
      return exe if File.executable?(exe) && !File.directory?(exe)
    end
  end

  nil
end